August Weather in Puerto Vallarta, Mexico - 2025

Puerto Vallarta is in the Mexican state of Jalisco on the Bahia de Banderas of the Pacific Ocean. Second in size to Guadalajara, it is the seat of government for the Puerto Vallarta municipality. It is often simply called Vallarta or P.V, a shorter version of the cities name, named after a former governor of Jalisco Ignacio Vallarta. The city has a rich cultural history and was an important village before it became a major tourist center.

Archeological finds suggest that humans have lived in this area since 580BC and were part of the Aztatlàn culture. From the 18^th century, Puerto Vallarta began to transform itself from a pearl diving and fishing village into a landing resort. At the time, the town was called Las Peñas. By the 19^th century, it was renamed Puerto Vallarta and had become a budding tourist destination for visitors from the Sierra towns.  

August weather in Puerto Vallarta Mexico

To get a good overview of the type of weather you can expect in August in Puerto Vallarta, we will look at the day and night temperature, minimum and maximum water temperature, and if August is comfortable or humid

Generally, August in Puerto Vallarta will be quite hot. Historical data shows that you can expect an average temperature of around 89°F / 32°C. But due to the extreme humidity it can feel extremely uncomfortable. During the night, it will cool down to around 78°F / 26°C. Many will prefer a location with air conditioning due to the night temperature, and the high humidity level.

Puerto Vallarta has its share of rainy days in August. You can expect around 29 rainy days, with on average 11.5 inches / 293 mm of rain during the whole month.

August weather in Puerto Vallarta Mexico in more detail

To get a better feeling for the type of weather, you can expect in August in Puerto Vallarta, we will look at the temperature, rain, wind, humidity, water temperature, and sun and clouds

- What will the temperature be in Puerto Vallarta in August

Generally, you can expect in August an average temperature of 89°F / 32°C during the day and an average of 78°F / 26°C during the night. In August, during the warmest part of the afternoon, the temperature can often get as high as 98°F / 37°C, and at the end of the night, it can get as low as 75°F / 24°C.

When looking at the whole year, August and September are the coldest months, with an average temperature of around 89°F / 32°C. May is the hottest month, with an average temperature of around 100°F / 38°C. When comparing August with the temperature in the month before and after, this is almost equal to July, which sees an average maximum temperature of around 91°F / 33°C. And equal to September, which sees an average maximum temperature of around 89°F / 32°C.

But average temperatures only tell half of the story. It is also good to check the maximum and minimum temperatures. When looking at the whole year, May is the hottest month, with a temperature of around 104°F / 40°C. January, September, November and December are the coldest months, with a temperature of around 96°F / 36°C. When comparing August with the temperature in the month before and after, this is equal to July, which sees an average maximum temperature of around 98°F / 37°C. And almost equal to September, which sees an average maximum temperature of around 96°F / 36°C.

In the following graph, you can see how many cold and hot days you can expect in Puerto Vallarta each month:

- Can you expect rain in August in Puerto Vallarta?

Generally, you can expect about 29 rain days in August, with on average 11.5 inches / 293 mm of rain.

When looking at the whole year, March is the dryest month, with an average rainfall of around 0.2 inches / 4 mmmm. July is the wettest month, with an average rainfall of around 12.7 inches / 322 mmmm. When comparing August with the month before and after, this is a lot less than July, which sees around 12.7 inches / 322 mm of rain. And a lot more than September, which sees around 10.7 inches / 272 mm of rain

If we look at the number of days with rain, March is the month with the least amount of rain days with an average of between 0 and 1 days. July and August And are the months with the most rain days with an average of between 29 and 30 days When comparing August with the month before and after, this is equal to July, which sees an average of between 29 and 30 days of rain. And slightly more than September, which sees around 26 days of rain

- What will the water temperature be in Puerto Vallarta for August

You can expect in August, the water temperature for Puerto Vallarta to be between 87°F / 31°C and 84°F / 29°C.

To compare the water temperature we will use the maximum water temperature. You can expect this temperature on a more sunny day, close to the shore, when the wind does not mix the relatively warmer and colder water.

October has the highest water temperature, with an average of between 87°F / 31°C and 89°F / 32°C. March has the lowest water temperature, with around 78°F / 26°C. When comparing the water temperature from August with the month before and after, August has a water temperature almost equal to July, with a water temperature of an average of between 87°F / 31°C and 89°F / 32°C. And almost equal to the water temperature from September, that is an average of between 87°F / 31°C and 89°F / 32°C.

- Can you expect in August a lot of sunny days in Puerto Vallarta

Generally, you can expect around 1 sunny days in August and around 14 partly sunny days. The remaining days will be cloudy.

When looking at the whole year, March and November And are the months with the higest number of sunny days, with around 21 sunny days. July and August And are the months with the lowest number of sunny days, with an average of between 0 and 1 sunny days. When comparing August with the number of sunny days in the month before and after, it is equal to July, with an average of between 0 and 1 sunny days. And almost equal to September, with an average of between 1 and 2 sunny days

We have looked at the sunny days in Puerto Vallarta. Let's also look at the cloudy or overcast days. August is the month with the highest number of cloudy days, with an average of between 16 and 17 cloudy days. May is the month with the lowest number of cloudy days, with an average of between 1 and 2 cloudy days. When comparing August with the number of cloudy days in the month before and after, it is almost equal to July, with around 16 cloudy days. And almost equal to September, with around 15 cloudy days

- Will it be comfortable in August in Puerto Vallarta?

Generally, August in Puerto Vallarta will be extremely humid, and can feel extremely uncomfortable.

We use the humidity and temperature in Puerto Vallarta to calculate the Wintersun Expert Comfort level for each month. The lower the Wintersun Expert Comfort level, the more comfortable it will be. Only for certain people, extremely dry air can feel slightly uncomfortable.

When looking at the whole year, February has the lowest humidity, with a Wintersun Expert comfort level of "comfortable" (not very humid). July and August And have the highest humidity, with a Wintersun Expert comfort level of "extremely uncomfortable" (extremely humid). When comparing August with the month before and after, this is equal to July, which has a Wintersun Comfort level of "extremely uncomfortable" (extremely humid). And almost equal to September, which has a Wintersun Comfort level of "extremely uncomfortable" (extremely humid)

What to do in Puerto Vallarta Mexico in August

• Àrea Natural Protegida Estero El Salado - this natural estuary is home to different species of animals like birds, reptiles, and fishes. Birdwatchers will enjoy watching the over 100 species of birds living here.
• Bahia de Banderas - the largest bay in the country has sailboats available for exploring the bay including an on-ship museum modeled after Christopher Columbuses ship with interesting artifacts from conquistador times.
• Islas Marietas National Park - a UNESCO biosphere and RAMSAR site, this protected island is home to animals like whales, dolphins, seabirds and other species of tropical fish.
• Malecon - this promenade is located along the downtown area of the city and is open for pedestrians. You can explore the area, visit some of the seaside restaurants, and purchase trinkets and souvenirs from the vendors here. There are also sand sculptures and intricate motifs to be seen as well.
• Museo Del Cuale - a number of stunning prehistoric ceramics from as far back as 2000 A.C. These artworks give a glimpse into the history of the area. There are also hunting tools, an excavated tomb, and panels displaying information on each exhibit.

Is it humid in Puerto Vallarta Mexico in August?

A lot of people ask interested in the humidity or relative humidity for Puerto Vallarta Mexico in August. But the real question they want to ask is not about humidity but the amount of moisture in the air. Or better, about comfort. Will it be comfortable in August in Puerto Vallarta, or will high humidity make it uncomfortable.

To answer this question, we have to look at the dew point. Relative humidity can change a lot in Puerto Vallarta during the day and night, as it changes when the amount of moisture changes and, but also when the temperature changes. It is a lot less reliable for comfort. Where the dew point only varies with the amount of moisture in the air.

Looking at the dew point, we can see that for the month of August, you can expect that Puerto Vallarta will be extremely humid, and can feel extremely uncomfortable.

February is the month with the most comfort. It will not be very humid, and will feel comfortable. July and August are the most uncomfortable months. It will be extremely humid, and can feel extremely uncomfortable. In the graph, you can see that there is some difference between the most comfortable and most uncomfortable months

Is August a good time to go to Puerto Vallarta Mexico?

Trying to answer the question of whether August is a good time to go to Puerto Vallarta is not as easy as it first seems. Some people like colder weather, and others prefer a warmer climate. Some are fine with some humidity, and others are not. If your location has air conditioning, the night temperature is less important.

These are some examples. I will try to answer the question with a more generic person in mind. The more detailed information in this article should be enough to check further if this applies to you as well.

If we look at the average temperature for Puerto Vallarta in August, we can see that it will be too hot for a lot of visitors. In August, you can expect it to be quite hot, with an average temperature of around 89°F / 32°C. But due to the extreme humidity it can feel extremely uncomfortable. During the night, it will be around 78°F / 26°C.

There are a significant number of overcast days in August. That does not mean there is not sun with around 1 sunny days and 14 partly sunny days.

The last aspect we will look at is rain. You can expect around 29 rainy days, with on average 11.5 inches / 293 mm of rain during August. More then 5 days rain per month makes the chance higher you will see some rain during a shorter stay. But a day with rain does not mean a day you can not enjoy.

We have looked at the average day temperature, the night temperature, humidity, the number of overcast days, and the rain. We think that August in Puerto Vallarta Mexico is not the most optimal destination. But that doesn't mean it is not a good time for you to go. As said before, each visitor has their own preferences when it comes to the weather.

Does it rain all day in Puerto Vallarta Mexico in August?

In Puerto Vallarta, there are a lot of rainy days in August. You can expect around 29 rainy days, with on average 11.5 inches / 293 mm of rain during the month.

Another way of looking at the rain is the number of sunny days. For Puerto Vallarta Mexico, there are, on average 1 sunny days and 14 partly sunny days in August. That clearly shows that it is not raining all the time.

Is August the rainiest month in Puerto Vallarta Mexico?

August is the month with the most rainy days, and not the month with the most rain.

To answer what the rainiest month is in Puerto Vallarta, we will both look at the month with the most rain, and the month with the highest number of rainy days.

July and August are the months with the the highest number of rainiest days. On average, you can expect 29 days with rain. March is the month with the lowest number of rainy days, with aproximately 1 day.

July and August are the months with the most rain. These are not equal to the months with the most rainy days. On average, you can expect 12.7 inches / 322 mm of rain. March is the month with the least amount of rain. This is not the same month as the one with the lowest number of rainy days. You can expect approximately 0.2 inches / 4 mm of rain.

Is August the most sunniest month in Puerto Vallarta Mexico?

August is not the month with the most sunny days, not the month with the most partly sunny days, and it is not the month with the lowest number of overcast days.

To answer what the sunniest month is in Puerto Vallarta, we will of course look at the month with the most sunniest days, but also look at the month with the biggest number of days that are sunny or partly sunny.

March and November are the months with the highest number of sunny days. On average, you can expect 1 sunny day, and 14 partly suny days. July and August are the months with the lowest number of sunny days.

May is the month with the highest number of sunny days and partly sunny days combined. While August is the month with the lowest number of sunny days and partly sunny days combined.

The last thing we will look at is the number of overcast days. May is the month with the lowest number of overcast days. While August is the month with the highest number of overcast days.

More information about Puerto Vallarta Mexico

Weather in Puerto Vallarta Mexico in other months

• Weather in Puerto Vallarta Mexico for January
• Weather in Puerto Vallarta Mexico for February
• Weather in Puerto Vallarta Mexico for March
• Weather in Puerto Vallarta Mexico for April
• Weather in Puerto Vallarta Mexico for May
• Weather in Puerto Vallarta Mexico for June
• Weather in Puerto Vallarta Mexico for July
• Weather in Puerto Vallarta Mexico for September
• Weather in Puerto Vallarta Mexico for October
• Weather in Puerto Vallarta Mexico for November
• Weather in Puerto Vallarta Mexico for December

What to do in Puerto Vallarta Mexico for each month

• What to do in January in Puerto Vallarta Mexico
• What to do in February in Puerto Vallarta Mexico
• What to do in March in Puerto Vallarta Mexico
• What to do in April in Puerto Vallarta Mexico
• What to do in May in Puerto Vallarta Mexico
• What to do in June in Puerto Vallarta Mexico
• What to do in July in Puerto Vallarta Mexico
• What to do in August in Puerto Vallarta Mexico
• What to do in September in Puerto Vallarta Mexico
• What to do in October in Puerto Vallarta Mexico
• What to do in November in Puerto Vallarta Mexico
• What to do in December in Puerto Vallarta Mexico